Triple eccentric/Offset metal to metal seat Butterfly Valves DN600 PN25
Metal seated butterfly valve
Test / Inspection:
Face To Face:
PS: We also can do according to customer's requirements.
Every valve in DBV with clear LOGO and Marking on the valve body.
Stainless steel Disc
Stainless steel ASTM A351 CF8 disc can be used in severe working conditions
Metal to Metal sealing
We protect every tiny detail of the seat sealing,very smoothly
to ensure excellent sealing performance.DBV butterfly valve
adopts all metal forged seal ring,overlays stellite alloy on the
sealing surface,its advantages are anti-wear,anti-erosion
and long service life,etc.
The top flange design comply with ISO 5211,The yoke is
convenient for assembling worm gear, pneumatic, electric，
hydraulic and pneumatic & hydraulic actuators.actuators.
Triple Eccentricity Design Features
The stem is offset on both the X (1)and Y (2) axis of the valve'scenter line. This produces a cam一like motion.
The third offset (3)consists of an inclined conical profile machined into the valvesealing surface. This allows
rotary engagement and disengagement of the seat and seal ring without interference. All rubbing
between seat and seal ring is thereby eliminated. Once the seatand seal ring are fully engaged torque
is applied in order to create a bi一directional, zero leakage, metal-to一metal seal. Forthis reason, triple
offset valves are often defined as "torque" seatedrather than”position” seated as in the case of resilient
or highperformance products.
Multi-layer disc sealing ring
Multi-layer disc sealing ring adopts ss304 and graphite laminated, sealing
by the inside graphite, applied for low and middle pressure, as recycle water,
swage treatment, city building, etc.
DBV VALVE CO., LTD is manufacturer of valves.
Email: [email protected]
Wenzhou Factory :No.96 Fanhua East Road,OuBei,WenZhou,Zhejiang,China,325102
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Main Technology Parameters
Test Pressure (Mpa)
1. DBV butterfly valve is characterized by simple structure, small volume and light weight, and it is easy to install and adjust.
The valve is widely used in the medium and low pressure pipeline.
2. Good sealing performance，corrosion resistance，high pressure and temperature resistance, smart control and safe use.
3. The unique design of triple eccentricity makes no friction between the sealing surface and extend the valve service life.
4. The elastic seal is produced by the torque.
5. The wedge design makes the valve close more and more tightly by automatic sealing function, and there’s compensation
and zero leakage between the sealing surfaces.
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